The figure of daily mean value in resent year showed: the medium term anomaly with impulse jumps appeared 11 months before the event, and the maximum of anomaly was 84 times of the normal rising rate; the short term anomaly appeared 4-1 month before the e
The figure of daily mean value in resent year showed: the medium term anomaly with impulse jumps appeared 11 months before the event, and the maximum of anomaly was 84 times of the normal rising rate; the short term anomaly appeared 4-1 month before the e
年日均值图显示，中期异常出现在震前11个月左右，表现为脉冲式向上突跳及阶跃式上升，最大异常量为日均正常上升速率的84倍；中短期异常出现在震前4个月和1个月，最大异常量为正常日均波动值的274倍；临震异常出现在震前的第9天，震前25小时达到最高值，最大异常量为正常日均波动值的2.5倍。